This moment in the January 6th committee proceedings was total Daily Parker bait (h/t George Conway). It came as the committee interviewed Max Miller, former senior adviser to the XPOTUS and as of next Tuesday the US Representative for Ohio's 7th district. He wanted to establish that no one called his White House office for hours after the insurrection began, pointing to the phone logs as evidence.
I'll let the J6 lawyer explain it:
MILLER (p 120 line 15): I want you to pull up the time from when I left the White House, there's a period of time, there was about 4 or 5 hours, of no phone calls.
J6 LAWYER: And I think what you're referring to is, if we look here...you have a call from Mr. Caporale at 10:40 am.
A: Uh huh.
Q: And the next call that's reflected on your records is 6:40 p.m. on January 6th, so, as you said.
A: So I wanted you to to bring that up is to show you, look, no one called me, right, when things were going wrong....
Q (p 121 line 8): No, I appreciate your perspective, and actually my colleague just corrected me. I need to point something out about how the phone records is—
A: —it's 5 minutes, isn't it?
Q: No, no, no, no. So what that is, is a sign of Greenwich Mean Time. I don't know if in the military you know what that is. So each line reflects whether the time is either Greenwich Mean Time or off of Greenwich Mean Time by some amount. And, at that time of year, the East Coast is 5 hours off Greenwich Mean Time. So, when you see the 6:40 calls on January 6th, the one after Mr. Caporale, you have to take 5 hours off. So that would be...1:40 pm.
A: ...Time is not important...
Congratulations to the anonymous committee lawyer understanding that "18:40Z" is actually 13:40 -0500. Although, now that you mention it, maybe the phone log actually said "18:40 -0500" which would be the time Miller said it was? Too bad we can't see the exhibit.